% TTCREATESEMAPHORE   Create a simple, counting TrueTime semaphore%%  Usage: ttCreateSemaphore(name, initval)%         ttCreateSemaphore(name, initval, maxval)%%  Inputs:%    name      Name of the semaphore, must be unique.%    initval   The initial value of the semaphore.%    maxval    The maximum value of the semaphore (default MAX_INT)%       % See also TTTAKE, TTGIVE%%       TrueTime, Version 1.4%       Copyright (c) 2006%       Martin Ohlin, Dan Henriksson and Anton Cervin%       Department of Automatic Control, LTH%       Lund University, Sweden